Faucet handle adapter



FIG. 1 is a top, front, right side perspective view of a faucet handle adapter showing my new design;

FIG. 2 is a bottom, rear left side perspective view thereof;

FIG. 3 is a front elevation view, the rear elevation view being a mirror image thereof;

FIG. 4 is a left side elevation view thereof with the right side elevation view being a mirror image;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

CLAIM The ornamental design for a faucet handle adapter, as shown and described. 